add DefaultSchemaResolver tests

Author: harrel56

src/test/java/dev/harrel/jsonschema/DefaultSchemaResolverTest.java

@@ -3,7 +3,12 @@
 import dev.harrel.jsonschema.providers.JacksonNode;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
 import org.junit.jupiter.params.provider.EnumSource;
+import org.junit.jupiter.params.provider.MethodSource;
+
+import java.net.URI;
+import java.util.stream.Stream;
 
 import static dev.harrel.jsonschema.ValidatorFactory.DefaultSchemaResolver;
 import static org.assertj.core.api.Assertions.assertThat;
@@ -20,6 +25,26 @@ void shouldResolveAllSpecificationMetaSchemas(SpecificationVersion spec) {
         assertThat(result.toJsonNode(new JacksonNode.Factory())).isPresent();
     }
 
+    @ParameterizedTest
+    @EnumSource(SpecificationVersion.class)
+    void shouldHandleNonExistentSubSchemas(SpecificationVersion spec) {
+        URI uri = URI.create(spec.getId()).resolve("meta/not-found");
+        DefaultSchemaResolver resolver = new DefaultSchemaResolver();
+        SchemaResolver.Result result = resolver.resolve(uri.toString());
+
+        assertThat(result.isEmpty()).isTrue();
+    }
+
+    @ParameterizedTest
+    @MethodSource("getDraft2019SubSchemas")
+    void shouldResolveDraft2019SubSchemas(URI uri) {
+        DefaultSchemaResolver resolver = new DefaultSchemaResolver();
+        SchemaResolver.Result result = resolver.resolve(uri.toString());
+
+        assertThat(result.isEmpty()).isFalse();
+        assertThat(result.toJsonNode(new JacksonNode.Factory())).isPresent();
+    }
+
     @Test
     void shouldHandleNonExistentResource() {
         DefaultSchemaResolver resolver = new DefaultSchemaResolver();
@@ -38,4 +63,17 @@ void shouldCacheResults() {
         assertThat(result.isEmpty()).isFalse();
         assertThat(result.toJsonNode(new JacksonNode.Factory())).isPresent();
     }
+
+    static Stream<Arguments> getDraft2019SubSchemas() {
+        return Stream.of(
+                        "meta/applicator",
+                        "meta/content",
+                        "meta/core",
+                        "meta/format",
+                        "meta/meta-data",
+                        "meta/validation"
+                )
+                .map(uri -> URI.create(SpecificationVersion.DRAFT2019_09.getId()).resolve(uri))
+                .map(Arguments::of);
+    }
 }